# Knowledge Base (/docs/analytical-apps/knowledge-base) The **Knowledge Base** is a place inside each app to keep notes, documents, and context about your data. It is where you write down the things that are obvious to you but would not be obvious to anyone (or anything) else: what a column means, where the data comes from, or the rules your business follows. ## Why it matters [#why-it-matters] The Knowledge Base does double duty. * For **people**, it is documentation that travels with the app, so a teammate opening it later understands the data without having to ask. * For **Vera**, it is useful background when its definitions are relevant to your request. You can explain your goals directly in chat and ask Vera to create or update the documentation alongside the pipeline and Visualisation. Writing notes first is optional. ## Where to find it [#where-to-find-it] Open your app, click **Open editor**, and open the **Knowledge Base** panel (or press K). Its left side is a panel with four tabs: * **Pages** - the notes themselves, in folders. * **Favorites** - the pages you starred. * **Skills** - the app's reusable AI tasks. See [Skills](./skills.mdx). * **Trash** - a bin icon holding what you deleted. ## Writing pages [#writing-pages] You organise the Knowledge Base with **folders** and **pages**, much like folders on your computer. **New page** and **New folder** create them at the top level, and the more-actions menu on any folder adds a page or a folder inside it. Rename anything from the same menu, and drag pages between folders as your app grows. A search box above the list filters the pages by name. The page editor supports Markdown: headings, lists, tables, code blocks, and more. It also renders **Mermaid diagrams**, so a flow chart or a small architecture sketch lives with the note that explains it. **Toggle full width** gives a wide table more room. You do not have to save. Pages save themselves as you write; a small indicator shows **Saving…** and then **Saved**. Star a page with **Add to favorites** to pin it to the **Favorites** tab, which is worth doing for the two or three pages people open constantly. **Remove from favorites** unpins it again. ## Importing documents [#importing-documents] You rarely start from a blank page. **Import** brings existing material in, in two shapes: * **Markdown or text** - MD, Markdown, TXT, and CSV files, added as pages directly. * **Document** - PDF, Word, PowerPoint, and Excel files. Documents are converted to Markdown so they are searchable, editable, and readable by Vera, and the original stays available to download exactly as it came in. You can drop several files at once; the dialog shows the progress ("3 of 8") and tells you at the end how many were imported, with **Try again** for any that failed. Keep the dialog open until it finishes. ## Deleting and restoring [#deleting-and-restoring] Deleting a page or a folder does not destroy it: **Move to trash** puts it, and everything inside it, in the **Trash** tab. From there **Restore** brings it back where it was, and **Delete permanently** removes it for good. Writing, moving to trash and restoring are for members with the **App builder** or **Admin** role on the app; **Delete permanently** is for administrators only. Anyone else reads the Knowledge Base without the editing controls and without the **Trash** tab.